Q&A: When do I put down crabgrass preventer?

By Kathy Van MullekomDaily Press

Q. I know it's getting close to time to put down crabgrass preventer but exactly when is that?

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A. A crabgrass preventer containing balan should be applied when forsythia is in full bloom, which is early March. You may need to do a repeat application, especially if you have severe problems with crabgrass, so read what directions suggest on your product.